Composition of matter for artificial stone.



106. COMPOSITlONS,

comma on msuc,

UNITED STATES PATENT omen PAUL KUHN, OF NEW YORK, N. 'Y.

COMPOSITION OF MATTER FOB ARTIFICIAL STONE.

No Drawing.

T 0 all whom it may concern:

Be it known that I, PAUL KUHX, a citizen of the German Empire, residing in New York, in the borough of the Bronx, county of the Bronx, and State of New York, have invented certain new and useful Improvements in Compositions of Matter for Artificial Stone, of which the following is a specification.

This invention relates to an improved composition of matter for making artificial stone, coverings for steam-bcilersand steampipes, electric conduits and the like, said composition being cast into molds without burning and being especially adapted for interior walls o f pnil dings and anaemia poses, in which a comparat vely llght,

fiifitffi iife f...m r sre uir and for thlspurpose the invention consists of a composition of matter which comprises laster of Paris, Portland cement, ma [2 w. M. .n. nesium car ona e, shavm s. with or without water'f'as The water contained in the mixture i in some cases evaporated, so

that a dry mixture results.

The composition is made of the following proportions: laster of Paris. 6 parts by volume; Portla'i l'it cem-ni 5 parts by vol ume' ma nesnun car onat 1 part by volumeas ies. parts y v0 ume: shavm 's 12 parts by volume water. 16 parts by volume. The ashes an sla ings are first moistened and then mixed with the plaster of Paris, Portland cement and the magnesium carbonate, water being gradually added as required. The shavings used are those from common pine or any other wood. The Portland cement and the fmagjnesium cgrmass can be readily cast into molds or shaped as required before setting. The ashes are screened in a mesh to a certain degree of fineness, while the shavings are disintegrated during the mixing of the substances in the mixing machine. They impart body to the mass and serve with the Specification of Letters Patent.

Application filed December 28, 1914. Serial No. 879,332.

ashes as fillings for increasing the bulk and reducing the expense of the composition. After the mass has set in the molds, it is removed from the same and then permitted to dry either at ordinary or artificial temperature.

The composition is made in the form of hollow or solid bricks for building purposes, especially for interior and partition walls, or molded into coverings for steam boilers and pipes, into electric conduits and other applications, for which a comparatively light, fireand waterproof material is required. As no burning is required, the articles made from the improved composition of matter can be furnished much cheaper than cement articles on the one hand, or the burned bricks or other articles on the other hand. The articles made from the improved composition are fireproof, possess the required tensile strength for building purposes, are to a considerable degree waterproof, and can be jointed readily by the ordinary mortars in general use.

I claim:

1. A composition of matter for artificial stone prepared of the following ingredicuts and volumetric proportions: 6 parts of plaster of Paris, 6 parts of Portland cement, 1 part of magnesium carbonate, 4 parts of ashes, and 12 parts of wood shavings in a dry mixture.

2. ream-1565mm of matter for artificial stone prepared of the following ingredients and-volumetric pgppprtions: .6 parts of plaster qilaris, 6 partsofPortland cement, 1

PAUL KUHN.

Witnesses F. Hose, J 0s. Brsnano.

Copies of this patent may be obtained tor five cents each, by addressing the Commissioner of Patents, Washington, D. c."

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